feat(client): unify card titles to the eyebrow style across uptime details

- StatBox titles now use the eyebrow variant (matches /uptime summary cards)
- BaseChart drops its leading icon block and renders the title via eyebrow so all chart cards share one header style
- Inside the average-response gauge, the qualitative label uses eyebrow with the status colour and the metric uses h1; the gauge track is a neutral disabled-action background so the active arc reads in light and dark

client/src/Components/design-elements/StatBox.tsx

@@ -69,7 +69,12 @@ export const StatBox = ({
 		>
 			<Stack onClick={onClick}>
 				<Box sx={{ display: "flex", alignItems: "center", gap: theme.spacing(2) }}>
-					<Typography color={textColor}>{title}</Typography>
+					<Typography
+						variant="eyebrow"
+						color={palette ? textColor : "text.secondary"}
+					>
+						{title}
+					</Typography>
 					{tooltip && (
 						<TooltipWithInfo
 							title={tooltip}